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On the role of coupling agents in zirconia‐polypropylene suspensions for ceramic injection molding
Author(s) -
Hunt K. N.,
Evans J. R. G.,
Woodthorpe J.
Publication year - 1988
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760282308
Subject(s) - materials science , molding (decorative) , ceramic , composite material , polypropylene , viscosity , cubic zirconia , suspension (topology) , coupling (piping) , titanate , lead zirconate titanate , polymer , chemical engineering , ferroelectricity , dielectric , mathematics , optoelectronics , homotopy , pure mathematics , engineering
The effect of titanate, zirconate, and zircoaluminate coupling agents on the viscosity of zirconia‐polypropylene injection molding blends was investigated. The zircoaluminate did not influence viscosity while the two former additives effected a considerable reduction. The titanate coupling agent also reduced the viscosity of the polymer in the absence of ceramic powder, and was more efficient in this respect, as a flow modifier than dioctyl phthalate. A comparable effect on the ceramic suspension was obtained by adding a species similar in molecular structure to the titanate coupling agent but without coupling ability.